Blow-off valve.



H. HORKMAN. BLOW-OFF VALVE. APPLIOATION FILED Alum,v L91}.

Patnted Mar. 2, 1915.

WITNESSES 2a" [NI EN TOR.

M. l By Heqry'HnrkrqfiIl- W.

ATTORNEY.

GFFTCE.

HENRY HORIQEAN, F NEENAH, WISCONSIN.

BLOW-OFF VALVE.

1 130 2 specification of Letters Patent. Patented Mar. 2, 1915. Application filedAugust 8, 1914. Serial No. 855,7 19.

To all whom it may concern Which is fitted to a counterbore in the holder Be it known that I, HENRY HoRKMAN, a 5, and 1s held in said counterbore by means citizen of the United States, residing at of a ring plate 15, which is bolted to the Neenah, in the county of Winnebago and holder with bolts 16. The nut is sur- 5 State of Wisconsin, have invented a new mounted with a hand wheel 17, and is seand useful Blow-Off Valve, of which the cured thereto with the key 18. The valve following is a specification. is provided w1th a socket 19, for receiving 60 My invention relates-to a blow-0E valve and holding the enlargement 20, upon the for paper pulp digesters, and consists of a lower end of the stem 9, and with cars 21, novel manner of forminghand hole covers which are fitted to sllde l'n grooves 22, in for the valve body or shell, as will be shown opposite hand hole covers 23, the grooves in the accompanying drawing, in which,- belng continued along the inside of the shell Figure 1 is a sectional side elevation of to the openlng 4, for guiding the valve for the valve. Fig. 2 is a plan in section, upon its full opening. The hand hole covers, 5 the line a, a, of Fig. 1, and through the shown in .1g. 2, are provided with ears 24, hand hole covers, with the valve below said for receivlng the hinged fastening bolts 25. line. Fig. 3 is a plan of the right hand The bolts are each hinged between ears end, or discharging end of the valve shell 26, upon the shell, one pair being shown at in Fig. 1, the left hand end being similar, the side of the shell in Fig. 1. By loosening 0 but slightly larger. Fig. 4. is a plan of the the nuts upon the bolts 25 around a cover, valve. Fig. 5 is a section diametrically but not removing them, the bolts can be through the valve. Fig. 6 is a plan of the swung outward and the cover removed, and inner side of one of the hand hole covers. thereby giving access to the interior of the Fig. 7 is a section across the screw and valve shell for removing any accumulations 5 packing gland holder upon the line b, b, of of matter after blowing off. The lower side Fig. 1, the holder being bolted to the valve of the valve is provided with an annular shell or casing. Figs. 1, 3, 6 and 7 are upon groove for receiving suitable material 27, the same scale, the others upon a larger one.- for being seated upon the valve seat 7 when Similar numerals indicate like parts in .the valve is screweddown thereon. the several views. Having described my invention, what I The novelty in the formation of the valve Claim and desire to secure by Letters Patconsists in locating hand holes upon oppoout, is,-- site sides of the valve shell, and where the In a blow-oft valve for pulp digesters and valve can be easily reached for cleaning it similar uses, a suitable shell for containing of any accumulations of pulp, and in forma valve having receiving and discharge ing grooves upon the inner sides of 'the openings, a valve seat around the receiving covers, said grooves registering with other opening, a valve adapted tobe seated there- 9 grooves in the valve shell. on, ears upon opposite edges of the valve, 1, indicates the body or shell of the valve, mechanism for opening and closing the which is angular relative to its openings, valve, a hand hole through the shell at opit having three, an entrance for pulp from posite sides thereof and giving'access to the the digester at 2, and a discharge outlet 3, valve, a cover for each hand hole, means for the third branch 4 being arranged for havsecuring the covers over the hand holes, a ing a nut and gland holder 5, bolted to it groove upon the inner face of each cover with bolts 6. The shell 1 is provided with fitted for receiving an ear of said valve and a valve seat 7 and a valve 8, the valve being to guide the valve when opening and closprovided with a stem 9, which is arranged ing, and a continuation of said grooves upon to slide through the holder 5, and is prothe inside of the shell for guiding the valve vided with a packing gland 10 and packing for its full opening. 11. The nut 12 is provided with threads 13, HENRY HORKMAN. which engage like threads 13, upon the Witnesses: tem v9 the nut being retained within the HENRY A. Fuss,

by means of an enlargement 14, C. M. ALBEE. 

